1023045 has 16 divisors (see below), whose sum is σ = 1649472. Its totient is φ = 541440.

The previous prime is 1023041. The next prime is 1023047. The reversal of 1023045 is 5403201.

It is not a de Polignac number, because 1023045 - 2² = 1023041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3474 + ... + 3756.

It is an arithmetic number, because the mean of its divisors is an integer number (103092).

2^1023045 is an apocalyptic number.

1023045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1023045 is a deficient number, since it is larger than the sum of its proper divisors (626427).

1023045 is a wasteful number, since it uses less digits than its factorization.

1023045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 1023045 is about 1011.4568700642. The cubic root of 1023045 is about 100.7623402716.

Adding to 1023045 its product of nonzero digits (120), we get a triangular number (1023165 = T₁₄₃₀).

Adding to 1023045 its reverse (5403201), we get a palindrome (6426246).

The spelling of 1023045 in words is "one million, twenty-three thousand, forty-five".